In a circle, a chord AB is 12 cm long and is at a distance of 4 cm from the center. What is the radius of the circle?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. cm.
Radius2 = (Half chord)2 + (Distance from center to chord)2
⇒ Radius2 = (12/2)2 + 42 = 36 + 16 = 52
⇒ Radius (r) = √52 cm